"Do I envy Madonna's body? Yes. Do I thank God that she has it? Yes!" Hayek tells the mag of the 54-year-old Material Girl. "If you're fifty-something and you look like Madonna, and you put a lifetime's work in the way you look, then flash it to the world!"

When it comes to Hayek's own methods for looking ageless, the sexy Mexico-born star credits her diet, in which nothing is off limits.

"I eat the fat, I eat the vegetables, I eat everything," Hayek explains. "If you exercise too much and you don't eat enough, it takes its toll on the skin. Everything starts aging. If you don't eat carbs, you slow your metabolism down. And you know what? You look miserable."

Adds Hayek, "The truth is, I just don't have the drive to be the prettiest and the thinnest. I can be happy for other people for their beauty. Learn to be happy for others and you can never run out of happiness."